US2008306578A1PendingUtilityA1

Attachment of Tubing in a Cardiac Lead

28
Assignee: HALLANDER SARAPriority: Nov 24, 2004Filed: Nov 24, 2004Published: Dec 11, 2008
Est. expiryNov 24, 2024(expired)· nominal 20-yr term from priority
Inventors:Sara HallanderSusanne NilssonKenneth DowlingEva MicskiTom Eriksson
A61N 1/056A61L 29/06A61N 1/3752
28
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Claims

Abstract

In a method for fixing tubing of a cardiac lead to a termination element, such as an electrode or a pin connector and in a cardiac lead formed according to such a method, an exterior of the termination element is provided with a thermoplastic fixation element, and thermoplastic tubing is provided with an end portion that coaxially surrounds a portion of the fixation element. A section of the end portion of the thermoplastic tubing is fused to the thermoplastic fixation element, so that the thermoplastic tubing is fixed to the termination element.

Claims

exact text as granted — not AI-modified
1 - 26 . (canceled) 
   
   
       27 . A cardiac lead comprising:
 a thermoplastic tubing;   a termination element selected from the group consisting of an electrode and a pin connector;   a thermoplastic fixation element disposed on an exterior of said termination element; and   said thermoplastic tubing having an end portion coaxially surrounding a portion of said thermoplastic fixation element, with a section of said end portion of said tubing being thermoplastically fused to said fixation element, to fix said tubing to said termination element.   
   
   
       28 . A cardiac lead as claimed in  claim 27  wherein said termination element has a recess in which said thermoplastic fixation element is disposed. 
   
   
       29 . A cardiac lead as claimed in  claim 27  wherein said thermoplastic fixation element extends substantially completely around a perimeter of said termination element. 
   
   
       30 . A cardiac lead as claimed in  claim 27  wherein at least one of said thermoplastic fixation element and said thermoplastic tubing is formed of a material selected from the group consisting of polyurethanes, polyolefins, polyamides, and polyamides. 
   
   
       31 . A cardiac lead as claimed in  claim 30  wherein at least one of said thermoplastic fixation element and said thermoplastic tubing is formed of a material selected from the group consisting of polyether polyurethane, polycarbonate polyurethane, poly(siloxane-carbonate) polyurethane, and poly(ether-siloxane) polyurethane. 
   
   
       32 . A cardiac lead as claimed in  claim 27  wherein said thermoplastic tubing is comprised of a polyether polyurethane comprising soft segments and hard segments. 
   
   
       33 . A cardiac lead as claimed in  claim 32  wherein said soft segments are formed of a material selected from the group consisting of polytetramethyleneoxide and polyhexamethyleneoxide. 
   
   
       34 . A cardiac lead as claimed in  claim 32  wherein said hard segments comprise a diisocyanate and a diol. 
   
   
       35 . A cardiac lead as claimed in  claim 27  wherein said thermoplastic tubing is formed of poly(ether-siloxane) polyurethane comprising soft segments and hard segments. 
   
   
       36 . A cardiac lead as claimed in  claim 35  wherein said soft segments are formed of a material selected from the group consisting of polyhexamethyleneoxide and polydimethylenessiloxane. 
   
   
       37 . A cardiac lead as claimed in  claim 35  wherein said hard segments comprise a diisocyanate and a diol. 
   
   
       38 . A cardiac lead as claimed in  claim 27  wherein said thermoplastic fixation element is formed of polyether polyurethane comprising soft segments and hard segments. 
   
   
       39 . A cardiac lead as claimed in  claim 38  wherein said soft segments are formed of a material selected from the group consisting of polytetramethyleneoxide and polyhexamethyleneoxide. 
   
   
       40 . A cardiac lead as claimed in  claim 38  wherein said hard segments comprise a diisocyanate and a diol. 
   
   
       41 . A method for fixing a thermoplastic tubing to a termination element selected from the group consisting of an electrode and a pin connector, said method comprising the steps of:
 providing a thermoplastic fixation element disposed an exterior of said termination element;   positioning an end portion of said thermoplastic tubing coaxially around a portion of said thermoplastic fixation element;   heating at least a section of and at least a section of said end portion of said tubing to thermoplastically fuse said section to said fixation element; and   allowing said fused sections to solidify to fix said tubing to said termination element.   
   
   
       42 . A method as claimed in  claim 41  comprising heating said sections of said fixation element and said end portion of said tubing by a heating technique selected from the group consisting of conductive heating, radiant heating, and ultrasonic heating. 
   
   
       43 . A method as claimed in  claim 41  comprising heating said sections of said fixation element and said end portion of said tubing by heat welding. 
   
   
       44 . A method as claimed in  claim 41  comprising positioning said fixation element in a recess at said exterior of said termination element. 
   
   
       45 . A method lead as claimed in  claim 41  comprising forming said thermoplastic fixation element substantially completely around a perimeter of said termination element. 
   
   
       46 . A method as claimed in  claim 41  comprising forming at least one of said thermoplastic fixation element and said thermoplastic tubing of a material selected from the group consisting of polyurethanes, polyolefins, polyamides, and polyimides. 
   
   
       47 . A method as claimed in  claim 46  comprising forming at least one of said thermoplastic fixation element and said thermoplastic tubing is formed of a material selected from the group consisting of polyether polyurethane, polycarbonate polyurethane, poly(siloxane-carbonate) polyurethane, and poly(ether-siloxane) polyurethane. 
   
   
       48 . A method as claimed in  claim 41  comprising forming said thermoplastic tubing of a polyether polyurethane comprising soft segments and hard segments. 
   
   
       49 . A method as claimed in  claim 48  comprising forming said soft segments of a material selected from the group consisting of polytetramethyleneoxide and polyhexamethyleneoxide. 
   
   
       50 . A method as claimed in  claim 48  comprising forming said hard segments of a diisocyanate and a diol. 
   
   
       51 . A method lead as claimed in  claim 41  comprising forming 27 said thermoplastic tubing of poly(ether-siloxane) polyurethane comprising soft segments and hard segments. 
   
   
       52 . A method lead as claimed in  claim 51  comprising forming said soft segments of a material selected from the group consisting of polyhexamethyleneoxide and polydimethylenessiloxane. 
   
   
       53 . A method lead as claimed in  claim 51  comprising forming said hard segments of a diisocyanate and a diol. 
   
   
       54 . A method as claimed in  claim 41  comprising forming said thermoplastic fixation element of polyether polyurethane comprising soft segments and hard segments. 
   
   
       55 . A method as claimed in  claim 54  comprising forming said soft segments of a material selected from the group consisting of polytetramethyleneoxide and polyhexamethyleneoxide. 
   
   
       56 . A method as claimed in  claim 54  comprising forming said hard segments of a diisocyanate and a diol.

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